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Guide
Cultivation

Growing Problems gallery on Shroomok

Mushroom growing troubleshooting. Photos, guides and help with contamination identification (mold, bacteria, pests, fungal diseases) and cultivation problems which are NOT contamination (aborts, mutation, overlay, bruising, mycelium piss and many more).

Contamination
Diseases
Wet Bubble (Mycogone) Wet Bubble (Mycogone)
Dry Bubble (Verticillium) Dry Bubble (Verticillium)
Mold
Cobweb Mold Cobweb Mold
Green Mold (Trichoderma) Green Mold (Trichoderma)
Blue-Green Mold (Penicillium) Blue-Green Mold (Penicillium)
Black Pin Mold (Rhizopus & Mucor) Black Pin Mold (Rhizopus & Mucor)
Black-yellow-green mold (Aspergillus) Black-yellow-green mold (Aspergillus)
Orange bread mold (Neurospora) Orange bread mold (Neurospora)
Pink mold Pink mold
Bacterial contamination Bacterial contamination
Bacterial Blotch Bacterial Blotch
Metabolites
Overlay
Abort
Mutation
Bruising

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Take a look at the following publications

Consultation & Mentorship

Let me (Shroomok) be your supervisor, mentor or just a buddy who can help/consult you regarding mushroom cultivation sub...

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Aug 2025

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Consultation & Mentorship

Bacterial blotch disease

The most prevalent bacterial disease affecting both commercially cultivated and home-grown mushrooms.

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Oct 2023

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Bacterial blotch disease

DIY Mold Test on Agar

Mold spores are everywhere. But how do you know what airborne contaminants are present in your home? Make a simple air s...

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Jul 2023

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DIY Mold Test on Agar

Natalensis: fruiting & overlay issues

All-in-one grow bag is not a magic pill, especially, when it comes to Natalensis cultivation. Aggressive behaviour of my...

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Jul 2023

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Natalensis: fruiting & overlay issues

Cracked & split caps

A split or cracked mushroom caps and stems are neither contamination nor a disease. These symptoms indicate dehydration...

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May 2023

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Cracked & split caps

Mycogone aka Wet Bubble

Shapeless masses, fluffy blobs of mycelium ooze with amber yellow orange brown liquid. Mycelium piss or wet bubble disea...

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Feb 2023

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Mycogone aka Wet Bubble

Sterilization vs Pasteurization for bulk substrate

Pros and cons of subject to prevent green mold Trichoderma contamination in mushroom growing. Discussion among members o...

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Jan 2023

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Sterilization vs Pasteurization for bulk substrate